"10/10"? As in anime that has no problems whatsoever and/is consistently great throoughout? It's hard for me to think of any that are like that, even if I love them.
- Kenichi: The World's Strongest Disciple - this would probably be the closest, but the anime ended at around 50 episodes with lots left to be covered.
- Slayers/Next - Also love both of these, and also like Try as well, but the story wasn't particularly great in that series.
- Yu Yu Hakusho/Rurouni Kenshin - These are series whose highs are amazing, but their lows are pretty bad.
- Tenchi Muyo/Universe - These two series were both pretty great, but Tokyo is abysmal trash.
There's also stuff that carries a lot of nostalgia for me like DBZ, but even the good portions that I fondly remember are also filled with trash, to be honest.
Then there's also stuff like Inuyasha, which probably would be among my top 10 anime if it continued in quality of the first 50 or so episodes, but instead it all goes to hell shortly after Inuyasha learns the backlash wave.